US20030228750A1 - Method for improving adhesion of a low k dielectric to a barrier layer - Google Patents
Method for improving adhesion of a low k dielectric to a barrier layer Download PDFInfo
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- US20030228750A1 US20030228750A1 US10/165,739 US16573902A US2003228750A1 US 20030228750 A1 US20030228750 A1 US 20030228750A1 US 16573902 A US16573902 A US 16573902A US 2003228750 A1 US2003228750 A1 US 2003228750A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76826—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by contacting the layer with gases, liquids or plasmas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76807—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76829—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76832—Multiple layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76829—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76834—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers formation of thin insulating films on the sidewalls or on top of conductors
Definitions
- the invention relates to the fabrication of semiconductor devices, and more particularly to a method for improving adhesion of a low k dielectric to a barrier layer in the damascene process.
- Copper has disadvantages when compared to aluminum that must be overcome. For example, copper is much more susceptible to oxidation during processing. Copper also tends to diffuse into adjacent materials, including dielectrics. To use copper for interconnections, therefore, it is necessary to encapsulate the copper in barrier materials.
- this sealing layer (also called a cap layer, or an encapsulation layer) overlying the copper is composed of silicon nitride, though other materials are used.
- FIG. 1 is a cross-section showing a dual damascene wiring according to the prior art.
- a semiconductor substrate 100 and an insulating layer 102 are depicted. Interconnection trenches are formed in the insulating layer 102 , and a copper layer 104 has been deposited overlying the insulating layer 102 and filling the trenches. The excess copper layer 104 is then polished back to the insulating layer 102 by chemical mechanical polishing (CMP). Thereafter, a sealing layer 106 is deposited. A low k dielectric layer 108 having dual damascene structures is formed on the sealing layer 106 .
- CMP chemical mechanical polishing
- a copper layer 110 is deposited overlying the low k dielectric layer 108 and filling the dual damascene structures.
- the copper layer 110 in the dual damascene-structures is connected to the copper interconnect 104 through removal of part of the sealing layer 106 , as shown in FIG. 1.
- the excess copper layer 110 is then polished back to the low k dielectric layer 108 by CMP.
- This sealing layer 106 typically silicon nitride (SiN), serves as a metal barrier layer to prevent the copper atoms from the layers 104 , 110 diffusing into insulating layer 102 and the low k dielectric layer 108 .
- the sealing layer 106 can be used as an etch stop layer for a dual damascene process.
- the sealing layer between the low k dielectric and copper interconnects creates reliability problems such as copper line-to-line electronic migration (EM) and time dependent dielectric breakdown (TDDB) between copper lines.
- EM copper line-to-line electronic migration
- TDDB time dependent dielectric breakdown
- an additional dielectric layer will be deposited over the sealing layer.
- the deposition of the dielectric layer produces stress, which can crack or break the sealing layer.
- poor adhesion between the sealing layer and dielectric layers causes the dielectric layer to peel from the sealing layer. The peeling of the dielectric layer creates a path for copper to diffuse outward and for moisture or other contaminates to diffuse inward.
- An aspect of this invention is to provide a method for forming a barrier layer between a low k dielectric and metal interconnects, comprising the steps of: providing a substrate covered by an insulating layer having the metal interconnects; forming a sealing layer on the metal interconnects and the insulating layer; performing a plasma treatment on the sealing layer by a reaction gas including at least one of CO 2 , NH 3 , NO 2 , SiH 4 , trimethylsilane (3MS), and tetramethylsilane (4MS); and forming a low k dielectric layer on the sealing layer.
- the sealing layer is composed of SiN, SiC, SiCH, SiCO or SiCN.
- Another aspect of this invention is to provide a method for forming a barrier layer between a low k dielectric and metal interconnects, comprising the steps of: providing a substrate covered by an insulating layer having the metal interconnects; forming a sealing layer on the metal interconnects and the insulating layer; forming an adhesion layer on the sealing layer; and forming a low k dielectric layer on the adhesion layer.
- the sealing layer is composed of SiN, SiC, SiCH, SiCO or SiCN.
- the adhesion layer is formed by chemical vapor deposition using a reaction gas including at least one of CO 2 , NH 3 , NO 2 , SiH 4 . 3MS, and 4MS or is formed by coating silicate solution.
- FIG. 1 is a sectional diagram showing a dual damascene wiring according to the prior art.
- FIGS. 2 a - 2 d are sectional diagrams showing a dual damascene wiring according to the first embodiment of the present invention.
- FIGS. 3 a - 3 d are sectional diagrams showing a dual damascene wiring according to the second embodiment of the present invention.
- FIGS. 2 a - 2 d and FIGS. 3 a - 3 d Embodiments of the present invention are now described with FIGS. 2 a - 2 d and FIGS. 3 a - 3 d.
- FIGS. 2 a - 2 d show a dual damascene wiring according to the first embodiment of the present invention.
- a substrate 200 is provided.
- the substrate 200 is understood to possibly include a semiconductor wafer, and active and passive devices formed within the wafer.
- a smooth substrate 200 is shown to simplify the diagram.
- An insulating layer 202 such as an oxide layer or organanosilicate glass (OSG) is deposited on the substrate 200 .
- Interconnection trenches are formed in the insulating layer 202 , and a metal layer 204 such as a copper layer has been deposited overlying the insulating layer 202 and filling the trenches.
- the excess copper layer 204 is then polished back to the insulating layer 102 by CMP to form copper interconnects 204 in the insulating layer 202 .
- OSG organanosilicate glass
- a sealing layer has been deposited on the copper interconnects 204 and the insulating layer 202 .
- the sealing layer is SiN, and can be SiC, SiCH, SiCO or SiCN.
- a plasma treatment is performed on the sealing layer by a reaction gas including at least one of CO 2 , NH 3 , NO 2 , SiH 4 , trimethylsilane (3MS), and tetramethylsilane (4MS) to create active sites on the surface of the sealing layer as indicated 206 a .
- the flow rates of CO 2 , NH 3 , NO 2 , SiH 4 , 3MS, and 4MS are, respectively, 500 ⁇ 1500 sccm, 1500 ⁇ 3500 sccm, 500 ⁇ 1500 sccm, 500 ⁇ 1500 sccm, 500 ⁇ 2500 sccm and 500 ⁇ 2500 sccm.
- a low k dielectric layer 208 such as SilK, FLARE, and PAE2, having dual damascene structures is formed on the sealing layer 206 a.
- a copper layer 210 is deposited overlying the low k dielectric layer 208 and filling the dual damascene structures.
- the copper layer 210 in the dual damascene structures is connected to the copper interconnects 204 through removal of part of the sealing layer 206 a.
- the excess copper layer 210 is then polished back to the low k dielectric layer 208 by CMP to form the copper interconnect 210 in the low k dielectric layer 208 .
- the sealing layer 206 a serves as a metal barrier layer to prevent the copper atoms from the layers 204 , 210 diffusing into insulating layer 202 and the low k dielectric layer 208 , and can be used as an etch stop layer for a dual damascene process. Since the active sites on the surface of the sealing layer 206 a react with the low k dielectric layer 208 , the adhesion of the low k dielectric layer 208 and sealing layer 206 a can be improved. Thus, according to the invention, the low k dielectric layer peeling from the sealing after subsequent CMP can be prevented. That is, reliability problems due to the poor adhesion between the sealing layer and low k dielectric layer can be eliminated.
- FIGS. 3 a - 3 d show a dual damascene wiring according to the second embodiment of the present invention.
- a substrate 200 is provided.
- An insulating layer 202 such as an oxide layer or organanosilicate glass (OSG) is deposited on the substrate 200 .
- Interconnection trenches are formed in the insulating layer 202 , and a metal layer 204 such as a copper layer has been deposited overlying the insulating layer 202 and filling the trenches.
- the excess copper layer 204 is then polished back to the insulating layer 102 by CMP to form copper interconnects 204 in the insulating layer 202 .
- OSG organanosilicate glass
- a sealing layer 206 such as SiN, SiC, SiCH, SiCO or SiCN, is deposited on the copper interconnects 204 and the insulating layer 202 . Thereafter, an adhesion layer 207 is deposited on the sealing layer 20 .
- an adhesion layer 207 is deposited on the sealing layer 20 .
- the thickness of the adhesion layer 207 formed by CVD is about 100 ⁇ 200 angstroms, and that formed by coating silicate solution is about 1000 ⁇ 2000 angstroms.
- a low k dielectric layer 208 such as SILK, FLARE, and PAE2, having dual damascene structures is formed on the adhesion layer 207 .
- a copper layer 210 is deposited overlying the low k dielectric layer 208 and filled the dual damascene structures.
- the copper layer 210 in the dual damascene structures is connected to the copper interconnects 204 through removal of part of adhesion layer 207 and the underlying sealing layer 206 .
- the excess copper layer 210 is then polished back to the low k dielectric layer 208 by CMP to form the copper interconnect 210 in the low k dielectric layer 208 .
- the adhesion layer 207 and the sealing layer 206 as a composite barrier layer, and can increase the adhesion with the low k dielectric layer. That is, it has advantages as well as the first embodiment of the invention.
- the adhesion layer can be used as a protective layer to prevent the sealing layer damage by stress during the low k dielectric layer is deposited.
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Abstract
Description
- 1. Field of the Invention
- The invention relates to the fabrication of semiconductor devices, and more particularly to a method for improving adhesion of a low k dielectric to a barrier layer in the damascene process.
- 2. Description of the Related Art
- As integrated circuit feature sizes continue to decrease, it has become advantageous to construct metal connections of copper instead of aluminum. Copper has a lower resistivity than aluminum, and therefore can form higher speed connections for a given line width.
- Copper has disadvantages when compared to aluminum that must be overcome. For example, copper is much more susceptible to oxidation during processing. Copper also tends to diffuse into adjacent materials, including dielectrics. To use copper for interconnections, therefore, it is necessary to encapsulate the copper in barrier materials.
- It is common in the art to deposit a barrier of a metal material after the copper layer is deposited, typically called a sealing layer. Typically in the art, this sealing layer (also called a cap layer, or an encapsulation layer) overlying the copper is composed of silicon nitride, though other materials are used.
- FIG. 1 is a cross-section showing a dual damascene wiring according to the prior art. A
semiconductor substrate 100 and aninsulating layer 102 are depicted. Interconnection trenches are formed in theinsulating layer 102, and acopper layer 104 has been deposited overlying theinsulating layer 102 and filling the trenches. Theexcess copper layer 104 is then polished back to theinsulating layer 102 by chemical mechanical polishing (CMP). Thereafter, a sealinglayer 106 is deposited. A low kdielectric layer 108 having dual damascene structures is formed on the sealinglayer 106. - Also, a
copper layer 110 is deposited overlying the low kdielectric layer 108 and filling the dual damascene structures. Herein, thecopper layer 110 in the dual damascene-structures is connected to thecopper interconnect 104 through removal of part of thesealing layer 106, as shown in FIG. 1. Theexcess copper layer 110 is then polished back to the low kdielectric layer 108 by CMP. - This
sealing layer 106, typically silicon nitride (SiN), serves as a metal barrier layer to prevent the copper atoms from thelayers layer 102 and the low kdielectric layer 108. In addition, thesealing layer 106 can be used as an etch stop layer for a dual damascene process. - However, the sealing layer between the low k dielectric and copper interconnects creates reliability problems such as copper line-to-line electronic migration (EM) and time dependent dielectric breakdown (TDDB) between copper lines. For example, after being deposited onto the copper surface, an additional dielectric layer will be deposited over the sealing layer. The deposition of the dielectric layer produces stress, which can crack or break the sealing layer. Moreover, in the subsequent CMP of dual damascene process, poor adhesion between the sealing layer and dielectric layers causes the dielectric layer to peel from the sealing layer. The peeling of the dielectric layer creates a path for copper to diffuse outward and for moisture or other contaminates to diffuse inward.
- Accordingly, it is an object of the present invention to perform a plasma treatment on a sealing layer to enhance adhesion between the low k dielectric layer and the sealing layer.
- It is another object of the invention to form an adhesion layer between the low k dielectric layer and the sealing layer to prevent sealing layer damage during formation of the low k dielectric layer and peeling of the low k dielectric layer after subsequent CMP.
- An aspect of this invention is to provide a method for forming a barrier layer between a low k dielectric and metal interconnects, comprising the steps of: providing a substrate covered by an insulating layer having the metal interconnects; forming a sealing layer on the metal interconnects and the insulating layer; performing a plasma treatment on the sealing layer by a reaction gas including at least one of CO2, NH3, NO2, SiH4, trimethylsilane (3MS), and tetramethylsilane (4MS); and forming a low k dielectric layer on the sealing layer. The sealing layer is composed of SiN, SiC, SiCH, SiCO or SiCN.
- Another aspect of this invention is to provide a method for forming a barrier layer between a low k dielectric and metal interconnects, comprising the steps of: providing a substrate covered by an insulating layer having the metal interconnects; forming a sealing layer on the metal interconnects and the insulating layer; forming an adhesion layer on the sealing layer; and forming a low k dielectric layer on the adhesion layer. The sealing layer is composed of SiN, SiC, SiCH, SiCO or SiCN. Moreover, the adhesion layer is formed by chemical vapor deposition using a reaction gas including at least one of CO2, NH3, NO2, SiH4. 3MS, and 4MS or is formed by coating silicate solution.
- The present invention can be more fully understood by reading the subsequent detailed description in conjunction with the examples and references made to the accompanying drawings, wherein:
- FIG. 1 is a sectional diagram showing a dual damascene wiring according to the prior art.
- FIGS. 2a-2 d are sectional diagrams showing a dual damascene wiring according to the first embodiment of the present invention.
- FIGS. 3a-3 d are sectional diagrams showing a dual damascene wiring according to the second embodiment of the present invention.
- Embodiments of the present invention are now described with FIGS. 2a-2 d and FIGS. 3a-3 d.
- FIGS. 2a-2 d show a dual damascene wiring according to the first embodiment of the present invention. In FIG. 2a, a
substrate 200 is provided. Thesubstrate 200 is understood to possibly include a semiconductor wafer, and active and passive devices formed within the wafer. Herein, asmooth substrate 200 is shown to simplify the diagram. Aninsulating layer 202 such as an oxide layer or organanosilicate glass (OSG) is deposited on thesubstrate 200. Interconnection trenches are formed in theinsulating layer 202, and ametal layer 204 such as a copper layer has been deposited overlying theinsulating layer 202 and filling the trenches. Theexcess copper layer 204 is then polished back to theinsulating layer 102 by CMP to formcopper interconnects 204 in theinsulating layer 202. - In FIG. 2b, a sealing layer has been deposited on the
copper interconnects 204 and theinsulating layer 202. In this embodiment, the sealing layer is SiN, and can be SiC, SiCH, SiCO or SiCN. Thereafter, a plasma treatment is performed on the sealing layer by a reaction gas including at least one of CO2, NH3, NO2, SiH4, trimethylsilane (3MS), and tetramethylsilane (4MS) to create active sites on the surface of the sealing layer as indicated 206 a. Herein, the flow rates of CO2, NH3, NO2, SiH4, 3MS, and 4MS are, respectively, 500˜1500 sccm, 1500˜3500 sccm, 500˜1500 sccm, 500˜1500 sccm, 500˜2500 sccm and 500˜2500 sccm. - In FIG. 2c, a low
k dielectric layer 208, such as SilK, FLARE, and PAE2, having dual damascene structures is formed on thesealing layer 206 a. Subsequently, acopper layer 210 is deposited overlying the lowk dielectric layer 208 and filling the dual damascene structures. Herein, thecopper layer 210 in the dual damascene structures is connected to the copper interconnects 204 through removal of part of thesealing layer 206 a. - In FIG. 2d, the
excess copper layer 210 is then polished back to the lowk dielectric layer 208 by CMP to form thecopper interconnect 210 in the lowk dielectric layer 208. - As mentioned above, the
sealing layer 206 a serves as a metal barrier layer to prevent the copper atoms from thelayers layer 202 and the lowk dielectric layer 208, and can be used as an etch stop layer for a dual damascene process. Since the active sites on the surface of thesealing layer 206 a react with the lowk dielectric layer 208, the adhesion of the lowk dielectric layer 208 and sealinglayer 206 a can be improved. Thus, according to the invention, the low k dielectric layer peeling from the sealing after subsequent CMP can be prevented. That is, reliability problems due to the poor adhesion between the sealing layer and low k dielectric layer can be eliminated. - FIGS. 3a-3 d show a dual damascene wiring according to the second embodiment of the present invention. Herein, the same parts with the FIGS. 2a-2 d use the same symbols. In FIG. 3a, a
substrate 200 is provided. An insulatinglayer 202 such as an oxide layer or organanosilicate glass (OSG) is deposited on thesubstrate 200. Interconnection trenches are formed in the insulatinglayer 202, and ametal layer 204 such as a copper layer has been deposited overlying the insulatinglayer 202 and filling the trenches. Theexcess copper layer 204 is then polished back to the insulatinglayer 102 by CMP to form copper interconnects 204 in the insulatinglayer 202. - In FIG. 3b, a
sealing layer 206, such as SiN, SiC, SiCH, SiCO or SiCN, is deposited on the copper interconnects 204 and the insulatinglayer 202. Thereafter, anadhesion layer 207 is deposited on the sealing layer 20. In this embodiment, there are two approaches to form theadhesion layer 207. One is to use chemical vapor deposition (CVD) by a reaction gas including at least one of CO2, NH3, NO2, SiH4, 3MS, and 4MS, and the other is to coat silicate solution (serves as an adhesion promoter) on the sealing layer. The thickness of theadhesion layer 207 formed by CVD is about 100˜200 angstroms, and that formed by coating silicate solution is about 1000˜2000 angstroms. - In FIG. 3c, a low
k dielectric layer 208, such as SILK, FLARE, and PAE2, having dual damascene structures is formed on theadhesion layer 207. Subsequently; acopper layer 210 is deposited overlying the lowk dielectric layer 208 and filled the dual damascene structures. Also, thecopper layer 210 in the dual damascene structures is connected to the copper interconnects 204 through removal of part ofadhesion layer 207 and theunderlying sealing layer 206. - In FIG. 3d, the
excess copper layer 210 is then polished back to the lowk dielectric layer 208 by CMP to form thecopper interconnect 210 in the lowk dielectric layer 208. - In this embodiment, the
adhesion layer 207 and thesealing layer 206 as a composite barrier layer, and can increase the adhesion with the low k dielectric layer. That is, it has advantages as well as the first embodiment of the invention. In addition, the adhesion layer can be used as a protective layer to prevent the sealing layer damage by stress during the low k dielectric layer is deposited. - The foregoing description has been presented for purposes of illustration and description. Obvious modifications or variations are possible in light of the above teaching. The embodiments were chosen and described to provide the best illustration of the principles of this invention and its practical application to thereby enable those skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the present invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.
Claims (18)
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20050100682A1 (en) * | 2003-11-06 | 2005-05-12 | Tokyo Electron Limited | Method for depositing materials on a substrate |
US20070037388A1 (en) * | 2005-07-29 | 2007-02-15 | Joerg Hohage | Method of forming an insulating capping layer for a copper metallization layer |
US20070123044A1 (en) * | 2005-11-30 | 2007-05-31 | Joerg Hohage | Method of forming an insulating capping layer for a copper metallization layer by using a silane reaction |
US20110115088A1 (en) * | 2009-11-19 | 2011-05-19 | Taiwan Semiconductor Manufacturing Co., Ltd. | Interconnect with flexible dielectric layer |
CN102403220A (en) * | 2010-09-17 | 2012-04-04 | 中芯国际集成电路制造(上海)有限公司 | Preparation process of SiCN diffusion barrier layer |
CN102468218A (en) * | 2010-10-29 | 2012-05-23 | 中芯国际集成电路制造(北京)有限公司 | Method for forming dual damascene structure and semiconductor device |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060068082A1 (en) * | 2002-09-25 | 2006-03-30 | Koninklijke Philips Electronics N.V. | Method of electrostatic deposition |
US20050062164A1 (en) * | 2003-09-23 | 2005-03-24 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method for improving time dependent dielectric breakdown lifetimes |
JP2005217142A (en) * | 2004-01-29 | 2005-08-11 | Semiconductor Leading Edge Technologies Inc | Process for fabricating semiconductor device |
US7102232B2 (en) * | 2004-04-19 | 2006-09-05 | International Business Machines Corporation | Structure to improve adhesion between top CVD low-k dielectric and dielectric capping layer |
US20060009030A1 (en) * | 2004-07-08 | 2006-01-12 | Texas Instruments Incorporated | Novel barrier integration scheme for high-reliability vias |
US9087877B2 (en) * | 2006-10-24 | 2015-07-21 | Taiwan Semiconductor Manufacturing Company, Ltd. | Low-k interconnect structures with reduced RC delay |
US7682989B2 (en) * | 2007-05-18 | 2010-03-23 | Texas Instruments Incorporated | Formation of a silicon oxide interface layer during silicon carbide etch stop deposition to promote better dielectric stack adhesion |
US10157844B2 (en) * | 2016-11-28 | 2018-12-18 | Taiwan Semiconductor Manufacturing Co., Ltd. | FinFET device having oxide layer among interlayer dielectric layer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6071809A (en) * | 1998-09-25 | 2000-06-06 | Rockwell Semiconductor Systems, Inc. | Methods for forming high-performing dual-damascene interconnect structures |
US6509623B2 (en) * | 2000-06-15 | 2003-01-21 | Newport Fab, Llc | Microelectronic air-gap structures and methods of forming the same |
US6472306B1 (en) * | 2000-09-05 | 2002-10-29 | Industrial Technology Research Institute | Method of forming a dual damascene opening using CVD Low-K material and spin-on-polymer |
US6569777B1 (en) * | 2002-10-02 | 2003-05-27 | Taiwan Semiconductor Manufacturing Co., Ltd | Plasma etching method to form dual damascene with improved via profile |
-
2002
- 2002-06-07 US US10/165,739 patent/US6649512B1/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050100682A1 (en) * | 2003-11-06 | 2005-05-12 | Tokyo Electron Limited | Method for depositing materials on a substrate |
US20070037388A1 (en) * | 2005-07-29 | 2007-02-15 | Joerg Hohage | Method of forming an insulating capping layer for a copper metallization layer |
US7491638B2 (en) | 2005-07-29 | 2009-02-17 | Advanced Micro Devices, Inc. | Method of forming an insulating capping layer for a copper metallization layer |
US20070123044A1 (en) * | 2005-11-30 | 2007-05-31 | Joerg Hohage | Method of forming an insulating capping layer for a copper metallization layer by using a silane reaction |
US7678699B2 (en) * | 2005-11-30 | 2010-03-16 | Advanced Micro Devices, Inc. | Method of forming an insulating capping layer for a copper metallization layer by using a silane reaction |
US20110115088A1 (en) * | 2009-11-19 | 2011-05-19 | Taiwan Semiconductor Manufacturing Co., Ltd. | Interconnect with flexible dielectric layer |
CN102074549A (en) * | 2009-11-19 | 2011-05-25 | 台湾积体电路制造股份有限公司 | Interconnect with flexible dielectric layer |
US8836127B2 (en) * | 2009-11-19 | 2014-09-16 | Taiwan Semiconductor Manufacturing Co., Ltd. | Interconnect with flexible dielectric layer |
CN102403220A (en) * | 2010-09-17 | 2012-04-04 | 中芯国际集成电路制造(上海)有限公司 | Preparation process of SiCN diffusion barrier layer |
CN102468218A (en) * | 2010-10-29 | 2012-05-23 | 中芯国际集成电路制造(北京)有限公司 | Method for forming dual damascene structure and semiconductor device |
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